# Adding and subtracting using the 'round and adjust' strategy

In this lesson, we will learn how to use the 'round and adjust' strategy to solve addition and subtraction equations.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

#### Unit quizzes are being retired in August 2023

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Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Use the derived fact '9-6 = 3' to solve 90 000 - 60 000 = ________.

1/5

Q2.Use the make 10 strategy to solve: 160 000 + 60 000 = _________.

2/5

Q3.Use either the derived facts or make 10 strategy to solve: 18 000 - 15 000 =

3/5

Q4.150 365 people attend an event. 80 000 people leave early. How many people are left?

4/5

Q5.Which derived fact could help us solve: 14 000 - 9000?

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Use the derived fact '9-6 = 3' to solve 90 000 - 60 000 = ________.

1/5

Q2.Use the make 10 strategy to solve: 160 000 + 60 000 = _________.

2/5

Q3.Use either the derived facts or make 10 strategy to solve: 18 000 - 15 000 =

3/5

Q4.150 365 people attend an event. 80 000 people leave early. How many people are left?

4/5

Q5.Which derived fact could help us solve: 14 000 - 9000?

5/5

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Adding and subtracting using the 'round and adjust' strategy.

Quiz to be completed following the lesson on: 'Adding and subtracting using the 'round and adjust' strategy.

Q1.What is the 'round and adjust' strategy?

1/5

Q2.Use 'rounding and adjusting' to solve: 53 700 + 3998 =

2/5

Q3.Use 'rounding and adjusting' to solve: 6880 - 2990 =

3/5

Q4.Use 'rounding and adjusting' to solve: 17 456 + 1980 =

4/5

Q5.Use 'rounding and adjusting' to solve: 215 678 + 3800 =

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Adding and subtracting using the 'round and adjust' strategy.

Quiz to be completed following the lesson on: 'Adding and subtracting using the 'round and adjust' strategy.

Q1.What is the 'round and adjust' strategy?

1/5

Q2.Use 'rounding and adjusting' to solve: 53 700 + 3998 =

2/5

Q3.Use 'rounding and adjusting' to solve: 6880 - 2990 =

3/5

Q4.Use 'rounding and adjusting' to solve: 17 456 + 1980 =

4/5

Q5.Use 'rounding and adjusting' to solve: 215 678 + 3800 =

5/5

# Lesson summary: Adding and subtracting using the 'round and adjust' strategy

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## Time to move!

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For 5 mins...

Move around:
Walk

On the spot:
Chair yoga